[clang] [analyzer][NFC] Add a test case to PR-70792 for Issue-59493 (PR #71073)

[Ella Ma via cfe-commits]

https://github.com/Snape3058 updated https://github.com/llvm/llvm-project/pull/71073

>From 90d72a1f1036d2486e66c5ec16c3a8dc4241fc00 Mon Sep 17 00:00:00 2001
From: Ella Ma <alansnape3058 at gmail.com>
Date: Thu, 2 Nov 2023 23:14:15 +0800
Subject: [PATCH 1/2] [clang][analyzer] Add a test case to PR-70792 for
 Issue-59493

---
 clang/test/Analysis/issue-70464.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/clang/test/Analysis/issue-70464.cpp b/clang/test/Analysis/issue-70464.cpp
index f3b3072eb919823..331068775821e7e 100644
--- a/clang/test/Analysis/issue-70464.cpp
+++ b/clang/test/Analysis/issue-70464.cpp
@@ -66,3 +66,23 @@ struct Derived : Base {
 void entry() { Derived test; }
 
 } // namespace delegate_ctor_call
+
+// Additional test case from issue #59493
+namespace init_list_array {
+
+struct Base {
+  int foox[1];
+};
+
+class Derived : public Base {
+public:
+  Derived() : Base{{42}} {
+    // The dereference to this->foox below should be initialized properly.
+    clang_analyzer_dump(this->foox[0]); // expected-warning{{42 S32b}}
+    clang_analyzer_dump(foox[0]); // expected-warning{{42 S32b}}
+  }
+};
+
+void entry() { Derived test; }
+
+} // namespace init_list_array

>From 34e909e5bb31fa766114f6dc7bf43818932861a2 Mon Sep 17 00:00:00 2001
From: Ella Ma <alansnape3058 at gmail.com>
Date: Fri, 3 Nov 2023 14:05:21 +0800
Subject: [PATCH 2/2] [pr71073] update as revision, add a test case also for
 #54533

---
 clang/test/Analysis/issue-70464.cpp | 76 +++++++++++++++++++++++++++--
 1 file changed, 71 insertions(+), 5 deletions(-)

diff --git a/clang/test/Analysis/issue-70464.cpp b/clang/test/Analysis/issue-70464.cpp
index 331068775821e7e..a2ce9a7310e472c 100644
--- a/clang/test/Analysis/issue-70464.cpp
+++ b/clang/test/Analysis/issue-70464.cpp
@@ -71,18 +71,84 @@ void entry() { Derived test; }
 namespace init_list_array {
 
 struct Base {
-  int foox[1];
+  int foox[5];
+};
+
+class Derived1 : public Base {
+public:
+  Derived1() : Base{{1,4,5,3,2}} {
+    // The dereference to this->foox below should be initialized properly.
+    clang_analyzer_dump(this->foox[0]); // expected-warning{{1 S32b}}
+    clang_analyzer_dump(this->foox[1]); // expected-warning{{4 S32b}}
+    clang_analyzer_dump(this->foox[2]); // expected-warning{{5 S32b}}
+    clang_analyzer_dump(this->foox[3]); // expected-warning{{3 S32b}}
+    clang_analyzer_dump(this->foox[4]); // expected-warning{{2 S32b}}
+    clang_analyzer_dump(foox[0]); // expected-warning{{1 S32b}}
+    clang_analyzer_dump(foox[1]); // expected-warning{{4 S32b}}
+    clang_analyzer_dump(foox[2]); // expected-warning{{5 S32b}}
+    clang_analyzer_dump(foox[3]); // expected-warning{{3 S32b}}
+    clang_analyzer_dump(foox[4]); // expected-warning{{2 S32b}}
+  }
+};
+
+void entry1() { Derived1 test; }
+
+class Derived2 : public Base {
+public:
+  Derived2() : Base{{0}} {
+    // The dereference to this->foox below should be initialized properly.
+    clang_analyzer_dump(this->foox[0]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(this->foox[1]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(this->foox[2]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(this->foox[3]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(this->foox[4]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(foox[0]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(foox[1]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(foox[2]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(foox[3]); // expected-warning{{0 S32b}}
+    clang_analyzer_dump(foox[4]); // expected-warning{{0 S32b}}
+  }
+};
+
+void entry2() { Derived2 test; }
+
+} // namespace init_list_array
+
+namespace init_list_struct {
+
+struct Base {
+  struct { int a; int b; } foox;
+};
+
+class Derived : public Base {
+public:
+  Derived() : Base{{42, 24}} {
+    // The dereference to this->foox below should be initialized properly.
+    clang_analyzer_dump(this->foox.a); // expected-warning{{42 S32b}}
+    clang_analyzer_dump(this->foox.b); // expected-warning{{24 S32b}}
+    clang_analyzer_dump(foox.a); // expected-warning{{42 S32b}}
+    clang_analyzer_dump(foox.b); // expected-warning{{24 S32b}}
+  }
+};
+
+} // namespace init_list_struct
+
+// Additional test case from issue 54533
+namespace init_list_enum {
+
+struct Base {
+  enum : unsigned char { ZERO = 0, FORTY_TWO = 42 } foox;
 };
 
 class Derived : public Base {
 public:
-  Derived() : Base{{42}} {
+  Derived() : Base{FORTY_TWO} {
     // The dereference to this->foox below should be initialized properly.
-    clang_analyzer_dump(this->foox[0]); // expected-warning{{42 S32b}}
-    clang_analyzer_dump(foox[0]); // expected-warning{{42 S32b}}
+    clang_analyzer_dump(this->foox); // expected-warning{{42 S32b}}
+    clang_analyzer_dump(foox); // expected-warning{{42 S32b}}
   }
 };
 
 void entry() { Derived test; }
 
-} // namespace init_list_array
+} // namespace init_list_enum